The Quibéron mutinies were a series of mutinies that occurred in the Brest squadron of the French Navy in September 1793, at the height of the Reign of Terror. They offered reasons and pretexts for the Jacobins to purge the Navy of most of its officers who belonged to the French aristocracy. The event was interpreted as both a culmination of the disorganisation of the French Navy from 1790, and a cause of its disorganisation in the following years.